CN203086744U - A repeater station receiver device capable of effectively withstanding signal rapid fading and large signal barrage jamming - Google Patents
A repeater station receiver device capable of effectively withstanding signal rapid fading and large signal barrage jamming Download PDFInfo
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- CN203086744U CN203086744U CN 201320014132 CN201320014132U CN203086744U CN 203086744 U CN203086744 U CN 203086744U CN 201320014132 CN201320014132 CN 201320014132 CN 201320014132 U CN201320014132 U CN 201320014132U CN 203086744 U CN203086744 U CN 203086744U
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Abstract
The utility model discloses a repeater station receiver device capable of effectively withstanding signal rapid fading and large signal barrage jamming. The system comprises a low-noise amplifier LNA, a numerical control attenuator ATT, a gain-variable amplifier VGA, a signal amplifier AMP, an operational amplifier OP, a mixer Mixer, a frequency local oscillator source Lo, an analog/digital converter AD, a digital/analog converter DA, a signal detector DEC, a band-pass filter BPF, a low-pass filter LPF, and a microcontroller MCU. The repeater station receiver device has beneficial effects that a three-stage dynamic control amplifying circuit is used, that different amplification/attenuation gradients are used for effectively withstanding problems of the rapid fading of a received signal and large signal barrage jamming so as to satisfy high indexes and high performance of a communication system.
Description
Technical field
The utility model relates to a kind of repeater receiver apparatus, more specifically says, it relates to a kind of effective repeater receiver apparatus to antinoise signal rapid fading and strong signal blocking.
Background technology
Barrage jamming is meant when receiver receives faint useful signal, is subjected to the interference that causes with the reception saturation distortion that outer strong signal causes, is called barrage jamming.Main influence has: in the overlay area, user's cutting off rate is higher; For translational speed faster the incision success rate of user in the minizone can reduce, user's speech quality can descend.Rapid fading is meant the decline that produces mainly due to multipath transmisstion, because many scatterings, reflection and refractile body are arranged around the moving body, cause the multipath transmission of signal, make mutual superposition between the signal of arrival, its composite signal amplitude shows as fluctuations fast, its reflection microcosmic among a small circle in the Change in Mean of tens of wavelength magnitude incoming levels and the loss that produces, problem such as rapid fading equally can cause speech quality to descend, and the data service error rate increases and the user goes offline.Present receiver design is not especially effectively tackled way to rapid fading and strong signal blocking.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, a kind of rapid fading and strong signal blocking problem of effective antagonism received signal are provided, thereby satisfy the communication system high target, effective repeater receiver apparatus of high performance requirement to antinoise signal rapid fading and strong signal blocking.
The purpose of this utility model is achieved through the following technical solutions.This effectively to the repeater receiver apparatus of antinoise signal rapid fading and strong signal blocking, comprise low noise amplifier LNA, numerical-control attenuator ATT, gain adjustable amplifier VGA, signal amplifier AMP, operational amplifier OP, frequency mixer Mixer, frequency local vibration source Lo, analog-to-digital converter AD, digital-to-analog converter DA, sound detector DEC, band pass filter BPF, low pass filter LPF and microcontroller MCU; Behind the radiofrequency signal input low noise amplifier LNA, be exaggerated among the ATT that is input to MCU control then, through after the decay of certain numerical value, among the input AMP, after amplifying, be input to then among the VGA1 of MCU control by BPF, in frequency mixer, realize down-conversion with Lo, become intermediate-freuqncy signal, intermediate-freuqncy signal enters among the VGA2 of MCU control by behind the LPF, the signal of realizing certain numerical value amplifies, finally by intermediate-freuqncy signal output behind the wave detector DEC; The intermediate-freuqncy signal that detects in the wave detector, amplify the back through operational amplifier OP4 and become digital signal by analog signal by A-D converter AD, be input among the MCU, the control attenuator ATT of MCU output and the digital signal of gain adjustable amplifier VGA are by digital-to-analog converter DA, become analog voltage signal from digital signal, through after the processing of amplifier to ATT, VGA1, VGA2 realizes the control of numerical value; Define in the utility model: ATT is first order control; VGA1 is second level control; VGA2 is third level control.
As preferably: be input to the output intermediate-freuqncy signal in radiofrequency signal, the control slope of three grades of controls in the whole process is necessary for first order slope less than the second level, and second level slope is less than the third level.
As preferably: slope is assigned as: 1:2.5:5.
As preferably: in radiofrequency signal is input to the whole link of output intermediate-freuqncy signal, adopt two-stage control at least.
As preferably: when whole receiver link input dynamic range was enough, being input in the whole link of output intermediate-freuqncy signal partial control in radiofrequency signal can remove.
The beneficial effects of the utility model are: adopt three grades of dynamically control amplifying circuits, realize effectively resisting the rapid fading and the strong signal blocking problem of received signal with different amplification slopes, thereby satisfy the communication system high target, high performance requirement.
Description of drawings
Fig. 1 is the utility model theory diagram;
Fig. 2 is the use of the utility model in the double conversion scheme.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.Though the utility model will be described in conjunction with preferred embodiment, should know, do not represent that the utility model is limited among the described embodiment.On the contrary, the utility model will be contained alternative, modified model and the equivalent in the scope of the present utility model that can be included in attached claims qualification.
As shown in Figure 1, the utility model proposes a kind of effective repeater receiver apparatus, comprise low noise amplifier LNA, numerical-control attenuator ATT, gain adjustable amplifier VGA, signal amplifier AMP, operational amplifier OP, frequency mixer Mixer, frequency local vibration source Lo, analog-to-digital converter AD, digital-to-analog converter DA, sound detector DEC, band pass filter BPF, low pass filter LPF and microcontroller MCU antinoise signal rapid fading and strong signal blocking.
After radiofrequency signal RFin is input to low noise amplifier LNA, be exaggerated among the ATT that is input to MCU control then, through after the decay of certain numerical value, among the input signal amplifier AMP, after amplifying, pass through band pass filter BPF, behind the filtering out of band signal, be input among the gain adjustable amplifier VGA1 of microcontroller MCU control, through in frequency mixer Mixer, realizing the signal down-conversion with the local oscillation signal of frequency local vibration source Lo output after the amplification of certain numerical value, become intermediate-freuqncy signal, intermediate-freuqncy signal enters among the VGA2 of MCU control by behind the low pass filter LPF, the signal of realizing certain numerical value amplifies, finally by intermediate-freuqncy signal output behind the wave detector DEC.Finished the processing of this radiofrequency signal.The intermediate-freuqncy signal that detects in the wave detector is amplified the back through operational amplifier OP4 and is become digital signal by A-D converter AD by analog signal, is input among the MCU, the control attenuator ATT and the gain adjustable amplifier VGA1 of MCU output, the digital signal of VGA2 is by digital-to-analog converter DA1, DA2, DA3, pass through OP1 again, OP2, OP3, become analog voltage signal by digital signal, realization is to ATT, VGA1, the control of VGA2 correlation values.Thereby finally realize the purpose of receiver to antinoise signal rapid fading and strong signal blocking.
Be noted that especially in radiofrequency signal and be input to the output intermediate-freuqncy signal, the control slope of three grades of controls in the whole process is necessary for first order slope less than the second level, second level slope is less than the third level, the slope distribution ratio as can for: 1:2.5:5 also can adopt other ratios.
If adopt the receiver scheme of double conversion or repeatedly frequency conversion also to be suitable for.Figure 2 shows that the double conversion scheme, the utility model is not limited only to the receiver of repeater, and other communication radio frequency receivers are suitable for too.
Claims (4)
1. an effective repeater receiver apparatus to antinoise signal rapid fading and strong signal blocking is characterized in that: comprise low noise amplifier LNA, numerical-control attenuator ATT, gain adjustable amplifier VGA, signal amplifier AMP, operational amplifier OP, frequency mixer Mixer, frequency local vibration source Lo, analog-to-digital converter AD, digital-to-analog converter DA, sound detector DEC, band pass filter BPF, low pass filter LPF and microcontroller MCU; Behind the radiofrequency signal input low noise amplifier LNA, be exaggerated among the numerical-control attenuator ATT that is input to microcontroller MCU control then, after overdamping, among the input signal amplifier AMP, after amplifying, be input to then among the gain adjustable amplifier VGA1 of microcontroller MCU control by band pass filter BPF, Lo realizes down-conversion in frequency mixer Mixer with the frequency local vibration source, become intermediate-freuqncy signal, intermediate-freuqncy signal is by behind the low pass filter LPF, enter that signal amplifies among the VGA2 of microcontroller MCU control, finally by intermediate-freuqncy signal output behind the wave detector DEC; The intermediate-freuqncy signal that detects in the wave detector, amplify the back through operational amplifier OP4 and become digital signal by analog signal by A-D converter AD, be input among the MCU, the control attenuator ATT of MCU output and the digital signal of gain adjustable amplifier VGA are by digital-to-analog converter DA, become analog voltage signal from digital signal, through ATT, VGA1 and VGA2 being realized after the processing of amplifier the control of numerical value.
2. effective repeater receiver apparatus according to claim 1 to antinoise signal rapid fading and strong signal blocking, it is characterized in that: be input to the output intermediate-freuqncy signal in radiofrequency signal, the control slope of three grades of controls in the whole process be first order slope less than the second level, second level slope is less than the third level.
3. according to claim 2 effectively to the repeater receiver apparatus of antinoise signal rapid fading and strong signal blocking, it is characterized in that: described slope is assigned as: 1:2.5:5.
4. according to claim 1 effectively to the repeater receiver apparatus of antinoise signal rapid fading and strong signal blocking, it is characterized in that: be input in radiofrequency signal and adopt two-stage control at least in the whole link of exporting intermediate-freuqncy signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014132 CN203086744U (en) | 2013-01-10 | 2013-01-10 | A repeater station receiver device capable of effectively withstanding signal rapid fading and large signal barrage jamming |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320014132 CN203086744U (en) | 2013-01-10 | 2013-01-10 | A repeater station receiver device capable of effectively withstanding signal rapid fading and large signal barrage jamming |
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| CN203086744U true CN203086744U (en) | 2013-07-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103068029A (en) * | 2013-01-10 | 2013-04-24 | 三维通信股份有限公司 | Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking |
| CN104038299A (en) * | 2014-06-19 | 2014-09-10 | 北京北方烽火科技有限公司 | Frequency sweeping device and signal processing method |
| CN104092471A (en) * | 2014-07-04 | 2014-10-08 | 三维通信股份有限公司 | High-dynamic high-gain broadband receiver |
| CN105319553A (en) * | 2015-11-30 | 2016-02-10 | 江苏中海达海洋信息技术有限公司 | LFM signal-based ultra wide band echo sounder and signal processing method thereof |
| CN108123764A (en) * | 2017-12-26 | 2018-06-05 | 三维通信股份有限公司 | A kind of mirror image calibrating installation and method with link circuit self-adapting |
-
2013
- 2013-01-10 CN CN 201320014132 patent/CN203086744U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103068029A (en) * | 2013-01-10 | 2013-04-24 | 三维通信股份有限公司 | Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking |
| CN103068029B (en) * | 2013-01-10 | 2015-07-15 | 三维通信股份有限公司 | Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking |
| CN104038299A (en) * | 2014-06-19 | 2014-09-10 | 北京北方烽火科技有限公司 | Frequency sweeping device and signal processing method |
| CN104038299B (en) * | 2014-06-19 | 2016-06-01 | 北京北方烽火科技有限公司 | Frequency-sweeping apparatus and signal processing method |
| CN104092471A (en) * | 2014-07-04 | 2014-10-08 | 三维通信股份有限公司 | High-dynamic high-gain broadband receiver |
| CN105319553A (en) * | 2015-11-30 | 2016-02-10 | 江苏中海达海洋信息技术有限公司 | LFM signal-based ultra wide band echo sounder and signal processing method thereof |
| CN108123764A (en) * | 2017-12-26 | 2018-06-05 | 三维通信股份有限公司 | A kind of mirror image calibrating installation and method with link circuit self-adapting |
| CN108123764B (en) * | 2017-12-26 | 2024-03-19 | 三维通信股份有限公司 | Mirror image calibration device and method with link self-adaption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20160110 |